Organic light emitting diode and organic light emitting display device including halogen dipole material

Patent metadata

Field	Value
Publication number	US-9595688-B2
Application number	US-201514921844-A
Country	US
Kind code	B2
Filing date	Oct 23, 2015
Priority date	Mar 23, 2015
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

An organic light emitting diode includes: a first electrode; a second electrode, the first electrode and the second electrode facing each other; an emission layer provided between the first electrode and the second electrode; and an electron injection layer provided between the second electrode and the emission layer, wherein at least one of the first electrode and the second electrode includes: a first material that is one of a group-1 metal based halogen dipole material, a group-2 metal based halogen dipole material, a lanthanide metal based halogen dipole material, or a transition, metal based halogen dipole material; and a second material that is a metal reacting to the first material.

First claim

What is claimed is:

1. An organic light emitting diode comprising:
a first electrode;
a second electrode facing the first electrode;
an emission layer between the first electrode and the second electrode; and
an electron injection layer between the second electrode and the emission layer,
wherein at least one of the first electrode and the second electrode comprises:
a first material comprising one of a group-1 metal based halogen dipole material, a group-2 metal based halogen dipole material, a lanthanide metal based halogen dipole material, or a transition metal based halogen dipole material; and
a second material comprising a metal reacting to the first material.

2. The organic light emitting diode of claim 1 , wherein the electron injection layer comprises at least one of the group-1 metal, the group-2 metal, the lanthanide metal the group-1 metal based halogen dipole material, the group-2 metal based halogen dipole material, and the lanthanide metal based halogen dipole material.

3. The organic light emitting diode of claim 2 , wherein the first material is a binary inorganic dipole material, a ternary inorganic dipole material, or a quaternary inorganic dipole material.

4. The organic light emitting diode of claim 2 , wherein the electron injection layer comprises a plurality of layers respectively comprising at least one of the group-1 metal, the group-2 metal the lanthanide metal, the group-1 metal based halogen dipole material, the group-2 metal based halogen dipole material and the lanthanide metal based halogen dipole material.

5. The organic light emitting diode of claim 2 , wherein the first material and the second material form a single layer.

6. The organic light emitting diode of claim 2 , wherein the first electrode and the second electrode each comprise a plurality of layers respectively comprising one of the first material or the second material.

7. The organic light emitting diode of claim 6 , wherein the second material is thicker than the first material.

8. The organic light emitting diode of claim 2 , further comprising:
an electron transport layer between the emission layer and the electron injection layer; and
a hole transport layer between the emission layer and the first electrode,
wherein the hole transport layer and the electron transport layer each comprise an organic material.

9. An organic light emitting device comprising:
a substrate;
a gate line on the substrate;
a data line crossing the gate line;
a driving voltage line crossing the gate line;
a switching thin film transistor coupled to the gate line and to the data line;
a driving thin film transistor coupled to the switching thin film transistor and to the driving voltage line; and
an organic light emitting diode coupled to the driving thin film transistor,
wherein the organic light emitting diode comprises:
a first electrode;
a second electrode facing the first electrode;
an emission layer between the first electrode and the second electrode; and
an electron injection layer between the second electrode and the emission layer,

wherein at least one of the first electrode and the second electrode comprises:
a first material comprising one of a group-1 metal based halogen dipole material, a group-2 metal based halogen dipole material, a lanthanide metal based halogen dipole material, or a transition metal based halogen dipole material; and
a second material comprising a metal reacting to the first material.

10. The organic light emitting device of claim 9 , wherein the electron injection layer comprises at least one of the group-1 metal, the group-2 metal, the lanthanide metal, the group-1 metal based halogen dipole material, the group-2 metal based halogen dipole material and the lanthanide metal based halogen dipole material.

11. The organic light emitting device of claim 10 , wherein the first material is a binary inorganic dipole material, a ternary inorganic dipole material, or a quaternary inorganic dipole material.

12. The organic light emitting device of claim 10 , wherein the electron injection layer comprises a plurality of layers respectively comprising at least one of the group-1 metal, the group-2 metal, the lanthanide metal, the group-1 metal based halogen dipole material, the group-2 metal based halogen dipole material and the lanthanide metal based halogen dipole material.

13. The organic light emitting device of claim 10 , wherein the first material and the second material form a single layer.

14. The organic light emitting device of claim 10 , wherein the first electrode and the second electrode each comprise a plurality of layers respectively comprising one of the first material or the second material.

15. The organic light emitting device of claim 14 , wherein the second material is thicker than the first material.

16. The organic light emitting device of claim 9 , further comprising:
an electron transport layer between the emission layer and the electron injection layer; and
a hole transport layer between the emission layer and the first electrode,
wherein the hole transport layer and the electron transport layer each comprise an organic material.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Dong Chan
• Kim Won Jong
• Kim Eung Do
• Seo Dong Kyu
• Yim Sang Hoon
• Han Won Suk

Classifications

• H10K2102/00

  Constructional details relating to the organic devices covered by this subclass · CPC title

• H10K2102/351

  Thickness · CPC title

• H10K50/16

  Electron transporting layers · CPC title

• H10K50/15

  Hole transporting layers · CPC title

• H10K59/805 Primary

  Electrodes · CPC title